Penerbit: Department of Soil Science
P-ISSN: 0852-257X
E-ISSN: 2086-6682
DOI: 10.5400
Fakultas Pertanian Umum Arsitektur
Artikel (421)
NH4+, dan Fe3+ terhadap Ketersediaan K Jerapan dan Pengaruh Na+, NH4+ pada Tanah-tanah yang Didominasi Mineral Liat Smektit
Nursyamsi, Dedi, Idris, Komaruddin, Sabiham, Supiandi
Total content of potassium in smectitic soils is commonly high, however its availability for plant growth is frequently problem because it is fixed at interlayer space of 2:1 type of clay mineral. The research was  aimed to study the sorption and effect of Na+, NH +, and Fe3+  on soil availabl...
JOURNAL OF TROPICAL SOILS; Vol. 14 No. 1: January 2009; 33-40 | 2009
Phosphorus Sorption Characteristics of Red Soils from Lampung, West- and Central Java
Siradz, Syamsul Arifin
Phosphorus Sorption Characteristics of Red Soils from Lampung, West- and Central Java (S.A. Siradz and R.J. Gilkes): Red soil is a common name used to identify any soil showing yellowish to reddish colour, these soils mainly occur in tropical and subtropical regions. The term is frequently used to c...
JOURNAL OF TROPICAL SOILS; Vol. 14 No. 1: January 2009; 25-31 | 2009
Reaksi Pemasaman Senyawa Pirit pada Tanah Rawa Pasang Surut
Priatmadi, Bambang Joko, Haris, Abdul
Most of swamp soils in tidal land are Acid Sulfate Soils. Acid sulfate soils are the common name given to soils containing iron sulfides (pyrite). The soils are characterized by very low pH and high amount of soluble S and Fe, resulted from oxidation of pyrite when soils are drained.  This study ...
JOURNAL OF TROPICAL SOILS; Vol. 14 No. 1: January 2009; 19-24 | 2009
The Long-Term Effect of Blanket Phosphorus Fertilizer Application on the Available P Content in Sawah Soils; Comparative Study in Java, Indonesia
Darmawan, ., Kyuma, Kazutake, Masunaga, Tsugiyuki
In order to evaluate the effects of long-term phosphorus fertilizer application on the sawah soils, a comparative study was conducted in Java Island as a pioneer of Green Revolution (GR) technology application in Indonesia. Soil samples taken in 1970 by Kawaguchi and Kyuma were compared with new sam...
JOURNAL OF TROPICAL SOILS; Vol. 14 No. 1: January 2009; 9-18 | 2009
Evaluation for the Potential Use of Silicate Rocks from FourVolcanoes in Indonesia as Fertilizer and Soil Ameliorant
Priyono, Joko, Sutriono, Raden, Arifin, Zaenal
Silicate rocks, the abundant plant nutrient source in Indonesia, have not been evaluated for use as a fertilizer/and soil ameliorant. This research was aimed to identify (1) mineral and elemental compositions of silicate rocks originated from Galunggung, Kelud, Tambora, and Rinjani Volcanoes and (2)...
JOURNAL OF TROPICAL SOILS; Vol. 14 No. 1: January 2009; 1-8 | 2009
Konversi Hutan Menjadi Lahan Usahatani Karet dan Kelapa Sawit serta Pengaruhnya terhadap Aliran Permukaan dan Erosi Tanah di DAS Batang Pelepat
Sunarti, ., Sinukaban, Naik, Sanim, Bunasor
Forest conversion to some land use happened in all watershed, includes Batang Pelepat watershed. The objectives of this research are to know effect of forest conversion to land of rubber (Hevea brasiliensis) and palm oil (Elaeis guinensis Jack) farming on run off and soil erosion and different of er...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 253-260 | 2008
Studi Hifa Eksternal CMA dalam Memahami Fungsinya Mengkontribusi Serapan P Tanaman Menggunakan Metode Thin Section
Effendy, Machfud, Wijayani, Bhakti Wisnu
The study of the external hyphae of AMF was conducted for getting data of the soil hyphae distribution from the observation using thin section preparation. The experiment was arranged in factorial fully randomized design. The 1st factors are dosages of P application: 0; 45; 90; 135; and 180 kg ha-1....
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 241-252 | 2008
Perubahan Populasi Protozoa dan Alga Dominan pada Air Genangan Tanah Padi Sawah yang Diberi Bokashi Berkelanjutan
Niswati, Ainin, Dermiyati, ., Arif, Mas Achmad Syamsul
Protozoa and alga play important roles in biogeochemical nutrient cycles in freshwater environment, especially in the paddy fields.  The changes from the conventional technologies to organic technologies will change the communities structures of organisms lived in the paddy fields environment.�...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 225-231 | 2008
Kandungan Nitrogen dan Bobot Biji Kentang yang Diberi Pupuk Organik Difermentasi, Azospirillum Sp., dan Pupuk Nitrogen di Cisarua, Lembang, Jawa Barat
Nurmayulis, ., Maryati, .
A research was conducted to study response of potato (Solanum tuberosum L.) plant to the application of  fermented organic matter (‘porasi’) (0, 7.5, 15.0, and 22.5 t ha-1), without or with inoculation of Azospirillum sp., and N fertilizer (0, 86, 172, and 258 kg ha-1 N) and also to ...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 217-224 | 2008
Pemanfaatan Tithonia Diversifolia pada Tanah Sawah yang Dipupuk P Secara Starter terhadap Produksi serta Serapan Hara N, P, dan K Tanaman Padi
Gusnidar, ., Prasetyo, Teguh Budi
The research of Tithonia diversifolia utilization in the paddy soil that was fertilized P-starter on yield and N, P, K uptake on rice crop, has been conducted from August to December 2005.  The objective of this research was to determine interaction between P-starter levels, and tithonia levels o...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 209-216 | 2008